Rebound Coefficient of Collisionless Gas in a Rigid Vessel : a Model of Reflection of Field-Reversed Configuration
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概要
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A system of collisionless neutral gas contained in a rigid vessel is considered as a simplennodel of reflection of field-reversed configuration (FRC) plasma by a magnetic mirror. Therebound coefficient of the system is calculated as a function of the incident speed of the vesselnormalized by the thermal velocity of the gas before reflection. The coefficient is compared withexperimental data of FIX (Osaka U.) and FRX-C/T(Los Alamos N.L.). Agreement is good forthis simple model. Interesting is that the rebound coefficient takes the smallest value (x0.365)as the incident speed tends to zero and approaches unity as it tends to infinity. This behavior isreverse to that expected for a system with collision donainated fluid instead of collisionless gas.By examining the rebound coefficient, therefore, it covuld be successfully infered whether the Jonmean free path in each expeiment was longer or shorter than the plasma length.
- 社団法人日本物理学会の論文
- 1996-09-15
著者
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Takaku Yuichi
Department Of Physics College Of Science And Technology Nihon University
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Hamada Shigeo
Department Of Physics College Of Science And Technology Nihon University
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Hamada Shigeo
Department Of Agricultural Chemistry Faculty Of Agriculture Tohoku University
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